Straight swap, but you may find your turning radius a bit greater (205 to 225 section tyres), and also, compared to a Leon FR (which these tyres are meant for), you may find marginally more space between the tyres and the body in the arches. Don't know off the top of my head for the Leon, but my Volvo V40 205 turns in 10.8m, and 225 11.1 or something like that...
Other minor things you may encounter, noisier and harsher ride and maybe less fuel economy...but these are minute...Not 100% sure on accuracy of speedo readouts after the change